npm/yarn切换镜像源

• npm

//查询当前镜像
npm get registry 
// 设置为淘宝镜像
npm config set registry https://registry.npm.taobao.org/
//设置为官方镜像
npm config set registry https://registry.npmjs.org/ 

• yarn

//查询当前镜像
yarn config get registry
// 设置为淘宝镜像
yarn config set registry https://registry.npm.taobao.org/
//设置为官方镜像
yarn config set registry https://registry.yarnpkg.com